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Surface modification of electrospun chitosan nanofibrous mats for antibacterial activity
Author(s) -
Kangwansupamonkon Wiyong,
Tiewtrakoonwat Walaiwan,
Supaphol Pitt,
Kiatkamjornwong Suda
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40981
Subject(s) - chitosan , materials science , polymer chemistry , contact angle , fourier transform infrared spectroscopy , swelling , nuclear chemistry , ethylene oxide , antibacterial activity , electrospinning , ethylene glycol , chemical engineering , chemistry , copolymer , polymer , organic chemistry , composite material , biology , bacteria , engineering , genetics
Chitosan (CS) blended with poly(ethylene oxide) (PEO) was electrospun into nanofibrous mats. The spinning solution of 6.7 : 0.3 (% w/v) of CS : PEO was dissolved in a 70 : 30 (v/v) trifluoroacetic acid/dichloromethane solution. The obtained fibers were smooth without beads on their surfaces and average diameter of the fiber was 272 ± 56 nm. N ‐(2‐hydroxyl) propyl‐3‐trimethyl ammonium chitosan chloride (HTACC) and N ‐benzyl‐ N,N ‐dimethyl chitosan iodide (QBzCS) were each prepared from the CS/PEO mats. They were identified by Fourier‐transform infrared and X‐ray photoelectron spectroscopy and degree of swelling in water. Both quaternized electrospun chitosan mats exhibited superior antibacterial activity to the unmodified electrospun CS/PEO against Staphylococcus aureus and Escherichia coli at short contact times. After 4 h of contact, the reduction of both bacterial strains by CS/PEO, HTACC, and QBzCS was equal at about 99–100%. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40981.